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    <title>Document</title>
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    <script>
        // 验证 tt 变量中的具体内容
        var tt = "%E5%A4%A7%E8%BF%90%E4%BA%8C%E6%89%8B%E8%BD%A6"
        alert(decodeURI(tt))

        
    </script>
</body>
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